Hair with alopecia has a life of its own. And often it is chronic. Special reception can help. vitamins (enough to drink a month), sprays with minoxidil: Alerana or Regaine (the more percent, the better) for every day. Burdock and other oils 1-2 times a week. Special shampoos, serums, balms. Scalp massage for blood flow.
Take honey. Lubricate the bald spot liberally (this should be done in the summer). You go to a garden, forest or somewhere else where there are a lot of flies, mosquitoes and all kinds of midges. All these animals flock to the smell of honey, sit on their heads and begin to feast on. Wait when there will be as many of them as possible and they will get bogged down in honey as much as possible, clap your hands sharply and loudly: the flies fly away, but the legs remain!
Voila, you are hairy again.